Domain report: fzk.de

Registration

info

.de country-code

i

.de is a country-code TLD (ccTLD)

Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.

#1
✓ TLD delegated and signed #2

.de is delegated in the root zone and DNSSEC-signed.
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Registration data not available

No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.

#3

pass

ns-p-1.kit-dns.eu, ns-p-2.kit-dns.de, ns-p-3.kit-dns.net

Nameserver	Addresses	Network (AS)	Glue
ns-p-1.kit-dns.eu	185.237.152.53 2001:678:da0::53	AS213068 KIT-ANYCAST - Karlsruhe Institute of Technology, DE AS213068 KIT-ANYCAST - Karlsruhe Institute of Technology, DE	-
ns-p-2.kit-dns.de	185.237.153.53 2001:678:da4::53	AS213068 KIT-ANYCAST - Karlsruhe Institute of Technology, DE AS213068 KIT-ANYCAST - Karlsruhe Institute of Technology, DE	185.237.153.53 2001:678:da4::53
ns-p-3.kit-dns.net	141.52.0.53 2a00:139f:e::53	AS34878 KIT - Karlsruhe Institute of Technology, DE AS34878 KIT - Karlsruhe Institute of Technology, DE	-

✓ 3 nameservers #6

Delegated to ns-p-1.kit-dns.eu, ns-p-2.kit-dns.de, ns-p-3.kit-dns.net.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ No glue needed #8

All nameservers are outside the zone, so no glue records are needed.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
✓ Nameservers in different networks #10

The nameservers are spread over 3 IPv4 /24s and 3 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS213068 (KIT-ANYCAST - Karlsruhe Institute of Technology, DE): 4 addresses; AS34878 (KIT - Karlsruhe Institute of Technology, DE): 2 addresses.
✓ Nameserver names under 3 TLDs #12

Nameserver names use the TLDs .de, .eu, .net.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

warn

6 of 6 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-p-1.kit-dns.eu 185.237.152.53	NOERROR, 10 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)
ns-p-1.kit-dns.eu 2001:678:da0::53	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)
ns-p-2.kit-dns.de 185.237.153.53	NOERROR, 10 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)
ns-p-2.kit-dns.de 2001:678:da4::53	NOERROR, 13 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)
ns-p-3.kit-dns.net 141.52.0.53	NOERROR, 6 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)
ns-p-3.kit-dns.net 2a00:139f:e::53	NOERROR, 9 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)

✓ All respond #14

All 6 nameserver addresses answered.
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✓ No recursion #16

The nameservers do not answer recursive queries for other domains.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns-p-1.kit-dns.eu: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)"; ns-p-2.kit-dns.de: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)"; ns-p-3.kit-dns.net: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:27:53 by root@localhost)". Hide or replace the version string.

#17
✓ Zone transfers refused #18

No nameserver allows a zone transfer to the public.
✓ TCP supported #19

All nameservers answer over TCP.
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

pass

serial 2680 · primary ns-p-1.kit-dns.eu

✓ Serial 2680 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 6h, retry 1h, expire 7d, negative TTL 10m.
✓ Primary is a public nameserver #24

The primary nameserver ns-p-1.kit-dns.eu is one of the listed nameservers.
✓ Contact hostmaster@kit.edu #25

The SOA RNAME hostmaster.kit.edu means hostmaster@kit.edu.
✓ Counter serial #26

The serial 2680 is a plain counter.

warn

Not signed

info

6 records at the apex

Type	Value	TTL
SOA	ns-p-1.kit-dns.eu. hostmaster.kit.edu. 2680 21600 3600 604800 600	600
NS	ns-p-3.kit-dns.net.	600
NS	ns-p-2.kit-dns.de.	600
NS	ns-p-1.kit-dns.eu.	600
TXT	"HARICA-yrpc7cnM9uPp4ceqkXG"	900
TXT	"google-site-verification=WC5dC-GXO2PfWnuscbrsSf205j7bT9RU8VfCmx6gDhI"	900

✓ TTLs within range #32

TTLs: NS 10m. The NS TTL at the parent is 1d and in the zone 10m; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
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No CAA records

Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.

#35